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Grade: 12th pass

                        

A block is kept on a smooth inclined plane of angle of inclinaton 30 degree that moves with a constant acceleration so that the block does not slide relative to the inclined plane .Let F 1 be the contact force between the block and the plane .Now the inclined plane stops and let F 2 be the contact force between the two in this case .Then F 1 /F 2 IS (a) 1 (b)4/3 (c)2 (d)3/2

2 years ago

Answers : (1)

abinayaa
49 Points
							
in the first case,
F1 sin = 30=ma
and F1 cos=30=mg or f1 = mg/cos30
 
and in the second case,
f2 =mg cos 30
 
therefore,
F2 = mg cos 30
F1/F2 =1/cos^2 30 = 4/3
one year ago
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